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钼兰法应用于磷的测定,已有近九十年历史。对磷钼兰某些性质,国内外虽有研究,但意见分岐较大。尤其对磷钼兰中钼的价态报导比较混乱,国内尚未见专文沦述。我们在应用氟化钠-氯化亚锡钼兰法测磷时发现,随着试液中Fe~(8+)及Sn~(2+)量的变化,能产生两种不同性质的磷钼兰,进而确定系钼的价态不同。过去一些资料,对此未加阐述,致试液中Fe~(8+)量变化后
Molybdenum law applied to the determination of phosphorus, nearly 90 years of history. Some of the properties of phosphomolybdate, although both at home and abroad, but divergence of views larger. In particular, molybdenum Molybdenum in the valence reporting more confusing, no special paper has been reduced. When we measured the phosphorus by the sodium fluoride-stannous chloride molybdenum blue method, we found that with the changes of Fe 8+ and Sn 2+ in the test solution, we can get two kinds of phosphorus molybdenum Blue, and thus determine the price of molybdenum different. Some data in the past, did not elaborate on this, the test solution in the amount of Fe ~ (8 +) after the change